medium6.5
CVE-2026-93850
Mattermost versions 11.9.x <= 11.9.1, 11.8.x <= 11.8.5, 11.7.x <= 11.7.10, 11.10.x <= 11.10.1 fail to bind the volume of text extracted from an uploaded PDF wh…
Impact
Mattermost versions 11.9.x <= 11.9.1, 11.8.x <= 11.8.5, 11.7.x <= 11.7.10, 11.10.x <= 11.10.1 fail to bind the volume of text extracted from an uploaded PDF which allows an authenticated user to exhaust server memory and cause a denial of service via a crafted PDF whose compressed content stream expands into a very large amount of text.. Mattermost Advisory ID: MMSA-2026-00769
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Mattermost | Mattermost Versions 11.9.X | through 11.9.1 |
| 11.8.X | through 11.8.5 | |
| 11.7.X | through 11.7.10 | |
| 11.10.X | through 11.10.1 |
Versions were read from the advisory text. No structured product data has been published for this record yet.